Description
Rexroth SE311
Technical Specifications Brand: Rexroth Model: SE311 Feedback Signal Type: Incremental encoder A/B/Z differential signal Supply Voltage: 5 VDC encoder power supply Max Encoder Frequency: 1 MHz Operating Temperature: 0°C to +55°C Humidity: 5% to 85% non-condensing Protection Grade: IP20 cabinet installation Mounting: Plug-in board inside servo drive cabinet
Functional Features Receive differential incremental encoder A/B/Z phase pulse signals. Signal shaping and noise filtering for encoder feedback pulses. Detect encoder signal loss and report fault status to servo controller. Generate processed position and speed feedback data for motion control loop. 5 VDC power supply output to external incremental encoder. LED status indicators show encoder signal status and fault alarm.
Application Scenarios CNC machine tool feed axis control, gantry automation positioning system, packaging machine servo axis, metal processing equipment motion control, robotic joint servo control.
Performance Parameters High pulse frequency processing capability for high speed encoder. Differential signal reception provides strong noise suppression. Fast detection of encoder wire breakage and signal failure. Low signal phase distortion during pulse processing. Stable position calculation under continuous high-speed operation.
Material Composition PCB: FR4 multilayer printed circuit board with conformal coating. Front Panel: Flame retardant black plastic with LED indicators. Core Components: Differential receiver chip, pulse counter, signal filter circuit, surge protection components. Connector: Gold plated connector for backplane and encoder cable.
Structural Features Plug-in board structure for installation inside Rexroth servo drive rack. Front panel with LED status indicators. Rear connector mates with drive internal backplane. External connector for encoder shielded cable connection. Internal PCB layout separates high speed feedback signal circuit and power circuit.
Working Principle Differential A/B/Z encoder pulse signal enters module through shielded encoder cable. Differential receiver chip eliminates common-mode noise and shapes pulse waveform. Counter circuit counts pulse number and calculates motor rotor position and rotation speed. Processed feedback data transmits to servo controller via backplane bus. Fault detection circuit monitors signal quality continuously and triggers fault alarm when encoder signal is lost.
Installation Requirements Power off servo drive cabinet before inserting SE311 module. Lock module in rack slot. Connect shielded encoder cable to encoder connector, single point shield grounding. Separate encoder feedback cable from motor power cable. Check encoder wiring phase definition before power on.
Usage Notes Wear anti-static wristband during module replacement. Use only shielded encoder cable for feedback wiring. Check cable shielding and grounding. Prevent cable pulling and mechanical damage during machine movement. Inspect module and connector for dust accumulation periodically.
